Do hackers attack your masternode server? How to check and prevent I have been working with masternodes for almost two years now, which assumes additional knowledge of Linux systems. If you host and maintain masternodes by yourself, it is crucial to have the necessary knowledge of Linux, especially knowledge that system administrators have. Many tutorials and manuals can be found on the Internet, but to successfully apply this knowledge to blockchain and masternodes, we need to classify what is relevant and learn it. From a number of masternode coins, I chose TELOSCOIN as one of the very promising cryptocurrencies supported by serious team led by Pascal Papara who is the founder and CEO of Transcendence blockchain. Learn more: https://telosgreen.org https://twitter.com/PaparaPascal From the very beginning of my collaboration with the Transcendence team, I have had a number of masternodes that I hosted on my own on VPS or Dedicated servers. During this time, my knowledge advanced to a decent level, but the learning is never ended … I applied my passion for programming to making various Discord bots. So, on Transcendence Discord we have several bots that help users in different ways. One of them, called MasternodeBot, reads the blockchain and reports the status of the masternode to the user. You can join Transcendence community Discord following this link: https://discord.gg/ykFdsHD All that bots, as well as one Transcendence blockchain (hot wallet), are hosted on a VPS that serves only these purposes and also represents one masternode in the network, which modestly contributes to network security. However, while controlling the operation of this VPS in the “htop” command, I noticed something that caught my attention. That was the “sshd: [accepted]” line I haven’t seen before. After researching, I realized that these were, in fact, persistent ssh brute force attacks on the server. Do we have to worry? Check out /var/log/auth.log (“sudo nano /var/log/auth.l...